My golden decks also keep very well. Only the gilded edges of the Touchstone start looking a bit irregular, in spite of very good care. But the decks with golden accents on the cards (Klimt, Botticelli, Tsar, Visconti...) all look fresh and nice.

I love Byzantine mosaics and illuminated manuscripts, and I definitely like my golden decks. I treat them with care but they feel more robust than I expected. They do have this flexible Lo Scarabeo cardstock.